https://bugs.kde.org/show_bug.cgi?id=464710
Bug ID: 464710
Summary: Support opening .kra files bzip2 compressed
Classification: Applications
Product: krita
Version: unspecified
Platform: Other
OS: Other
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: File formats
Assignee: krita-bugs-n...@kde.org
Reporter: brunoa...@gmail.com
Target Milestone: ---
Created attachment 155537
--> https://bugs.kde.org/attachment.cgi?id=155537&action=edit
Values to prove the point
WHAT:
Request to add support for .kra files which are compressed with bzip2.
Proof-in-point it's better:
Bzip2 objectively supports higher compression rates than the deflate algorithm
which would help reducing the size of .kra files for archival purposes.
However, bzip2 is much slower than deflate. Most people wouldn't want to use it
for saving while modifying the file. However, for archival, some people may not
mind the extra time in exchange for better compression.
Tests prove the higher compression (and also sources):
https://archive.is/A5GsW
https://tukaani.org/lzma/benchmarks.html (https://archive.is/HJgj)
Values to prove the point: See the attachment (anti-spam block)
What Krita needs to do (in concrete) to fulfill this ticket:
Update quazip dependency to version 1.4.
(https://github.com/stachenov/quazip/releases/tag/v1.4)
Non-issues for this ticket:
Support saving kra files as bzip2. That will be handled by a different ticket.
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